Swift has now shared a glimpse of the project, which features garments including T-shirts, bomber jackets and jumpers.

Alongside a picture of her and McCartney looking at designs on Instagram, Swift wrote: “It’s been SO much fun to work/dream up cute stuff with my friend @stellamccartney to create a line inspired by my new album Lover.”

Swift added she “can’t wait to show you what we’ve been working on”, and revealed more details will be announced at a YouTube event on Thursday.